| Year | Age | State | Party | Office | District | Stage | Pos | Votes | % |
|---|---|---|---|---|---|---|---|---|---|
| 1975 | LA | D | State Senate | District 036 | Open Primary | 1 | 7,543 | 25.2% | |
| 1975 | LA | D | State Senate | District 036 | General | 1 | 15,739 | 70.7% | |
| 1979 | LA | D | State Senate | District 036 | General | 1 | 24,782 | 75.7% | |
| 1980 | LA | D | U.S. House | District 04 | Open Primary | 4 | 14,666 | 11.9% | |
| 1983 | LA | D | State Senate | District 036 | General | 1 | 0 | 0.0% | |
| 1987 | LA | D | State Senate | District 036 | General | 1 | 28,076 | 73.4% | |
| 1988 | LA | D | U.S. House | District 04 | Special Open Primary | 2 | 24,220 | 19.2% | |
| 1988 | LA | D | U.S. House | District 04 | Special | 2 | 62,214 | 49.5% | |
| 1990 | LA | D | U.S. House | District 04 | General | 2 | 74,388 | 45.3% | |
| 1991 | LA | D | State Senate | District 036 | General | 1 | 0 | 0.0% | |
| 1995 | LA | D | State Senate | District 036 | Open Primary | 1 | 20,477 | 83.1% | |
| 1995 | LA | D | State Senate | District 036 | General | 1 | 21,652 | 67.8% | |
| 1999 | LA | D | State Senate | District 036 | General | 1 | 21,686 | 74.8% | |
| 2007 | LA | D | Governor | General | 4 | 161,425 | 12.4% | ||
| 2016 | LA | D | U.S. Senate Class 3 | Open Primary | 2 | 337,833 | 17.5% | ||
| 2016 | LA | D | U.S. Senate Class 3 | General | 2 | 347,816 | 39.3% | ||
|
Age: Age as of July 1 of the year pertaining to this election. |